align usage of <button> and <a class="button">

[jludvice]

We use multiple ways of specyfiing buttons. For instance here it's <a [routerLink]=" ['/integrations/create'] " class='btn btn-primary https://github.com/redhat-ipaas/ipaas-ui/blob/f8b8fd9bff62a5576c21b35e34ebcc96ff6cf514/src/app/dashboard/emptystate.component.html#L13

and here it's <button class="btn btn-default" (click)="cancel()">Cancel</button>

I wote for using button because

• it makes sense semantically
• there is direct support by protractor to search button by it's title http://www.protractortest.org/#/api?view=ProtractorBy.prototype.buttonText

I wouldn't mind to open PR as an excercise if you @gashcrumb @kahboom agree with this alignment

[gashcrumb]

@jludvice yeah, if you've time to do a PR that's absolutely welcome :-) Thanks!

[jludvice]

Opened PR #247

[gashcrumb]

ooh, this was merged, closing :-)

[jludvice]

Reopening to align integration edit page (PR #320)

[jludvice]

PR #320 merged. Closing issue.